package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;


/**
 * ClassName: CategoryServiceImpl
 * Package: com.sky.service.impl
 * Description:
 *
 * @Author 谢依雯
 * @Create 2024/11/14 20:00
 */
@Service
@Slf4j
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    /**
     * 分类分页查询
     * @param categoryPageQueryDTO
     * @return
     */


    @Override
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());

        Page<Category> page=categoryMapper.pageQuery(categoryPageQueryDTO);
        List<Category> list=page.getResult();
        long total=page.getTotal();

        return new PageResult(total, list);
    }

    /**
     * 新增分类
     * @param categoryDTO
     */
    @Override
    public void insert(CategoryDTO categoryDTO) {
        Category category=new Category();
        BeanUtils.copyProperties(categoryDTO,category);
//        category.setCreateTime(LocalDateTime.now());
//        category.setUpdateTime(LocalDateTime.now());
//        category.setCreateUser(BaseContext.getCurrentId());
//        category.setUpdateUser(BaseContext.getCurrentId());
        category.setStatus(StatusConstant.DISABLE);
        categoryMapper.insert(category);
    }

    /**
     * 启用禁用分类
     * @param status
     * @param id
     */
    @Override
    public void isOpen(int status, Long id) {
        Category category=Category.builder()
                        .status(status)
//                        .updateTime(LocalDateTime.now())
//                        .updateUser(BaseContext.getCurrentId())
                        .id(id)
                        .build();
        categoryMapper.update(category);
    }

    /**
     * 根据id删除
     * @param id
     */
    @Override
    public void delete(Integer id) {
        //查询当前分类是否关联了菜品，如果关联了就抛出业务异常
        Integer count= dishMapper.count(id);
        if(count>0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        //查询当前分类是否关联了套餐，如果关联了就抛出业务异常
        count=setmealMapper.count(id);
        if(count>0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
        categoryMapper.delete(id);
    }

    /**
     * 修改分类
     * @param categoryDTO
     */
    @Override
    public void update(CategoryDTO categoryDTO) {
        Category category=new Category();
        BeanUtils.copyProperties(categoryDTO,category);
//        category.setUpdateTime(LocalDateTime.now());
//        category.setUpdateUser(BaseContext.getCurrentId());
        categoryMapper.update(category);
    }

    /**
     * 根据类型查询
     * @param type
     * @return
     */
    @Override
    public List<Category> getByType(Integer type) {
        return categoryMapper.getByType(type);
    }



}
